Simple Snap-Fit Joints Library

thingiverse

This is a simple snap-fit joints library based on "Snap-Fit Joints for Plastics - A Design Guide" by Bayer MaterialScience LLC .http://fab.cba.mit.edu/classes/S62.12/people/vernelle.noel/Plastic_Snap_fit_design.pdf The idea is to correctly dimension the snap-fit joints, according to the elongation at break that can withstand. -The global variable eps define the material (e.g. PLA: eps=0.03; ABS: eps=0.06) -The dimension are the same reported on Design Guide. For simple cantilever snap it is also possible to define h or y (see figure) -The value of K2 or K1 used in Ring snap could be taken from Fig 10 of guide (but the default K=2 should be ok). I have also added some simple example on the use of the library. I also printed the cable clamp, and it works well. it is suggested to print snap-fit cantilever on the XY printer plane. New version : 0.36 added SnapHoleY module Bug Fix: 0.35 on the basis of the shanemgrey reporting: on RSnapY I have added a check to avioid interference of lobes during closure; on RRSnappY I have added a check to avioid overlapped lobes. also the snapLib.Example files is updated. New version: 0.30 Added Scale factor f to reduce the calculate value h or y (this maintain the snap on unbreakable zone when f>1) added function Hsnap and Snap to calculate the snap H or Y for cantilever snap (useful to define the snap bores)